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本帖最後由 heavy91 於 2010-7-1 02:11 PM 編輯 3 C& R3 s" a: [+ C) m
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Relation of jitter type material~~
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6 F/ \6 \: {) ]5 w1 v0 O# BJitter can be defined as the deviations in a clock’s output transition
& W3 W8 U+ k9 E3 L# J8 D4 i \1 bfrom their ideal positions. The deviation can either be leading or
7 K0 u1 s9 q: s' w% L5 i# Tlagging the ideal position. Jitter is usually specified in ± pico seconds.
+ C$ p1 j1 _ b; G7 b5 zJitter measurements can be classified into three categories:
9 {: f/ q0 j* P) F0 rcycle-to-cycle jitter, period jitter, and long-term jitter. All jitter measurements0 X% G! Q; ]% N( b
are at a specified voltage, usually Vcc/2 or 1.5V.
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